CN114979846A

CN114979846A - Loudspeaker box

Info

Publication number: CN114979846A
Application number: CN202210361090.1A
Authority: CN
Inventors: 吴树文; 葛振凡
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-08-30
Anticipated expiration: 2042-04-07
Also published as: JP2023155138A; WO2023193298A1; CN114979846B

Abstract

The invention discloses a loudspeaker box, comprising: a housing having a receiving cavity; the sound production unit is fixed in the accommodating cavity and divides the accommodating cavity into a closed rear sound cavity and a front sound cavity communicated with the outside of the shell; accept to be equipped with the heat transfer chamber in the wall body in chamber, the heat transfer intracavity is filled there is heat transfer medium. Compared with the prior art, the heat exchange cavity filled with the heat exchange medium is arranged in the shell, the sound production unit vibrates to generate heat when the loudspeaker box is in a working state, the heat is transferred to the heat exchange medium through the wall body of the accommodating cavity, and the heat exchange medium is contacted with external air to exchange heat to release the heat, so that the heat dissipation efficiency of the loudspeaker box is improved.

Description

Loudspeaker box

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a loudspeaker box.

Background

The loudspeaker box is widely applied to portable mobile electronic products, such as mobile phones, so that audio signals are converted into sound to be played, the loudspeaker box is high in loudness, and the low-frequency sound effect is good.

The loudspeaker box in the prior art comprises a front cover, a rear cover and a sound generating unit, wherein the rear cover is covered on the front cover and jointly forms an accommodating space, the sound generating unit is accommodated in the accommodating space, and the accommodating space is divided into a front sound cavity and a rear sound cavity by the sound generating unit. However, the prior art speaker boxes have poor heat dissipation and thus limited acoustic performance.

Disclosure of Invention

In view of the above problems, the present invention provides a speaker box to solve the technical problems in the prior art, which enables the speaker box to have good heat dissipation.

In a first aspect, the present invention provides a loudspeaker enclosure comprising:

a housing having a receiving cavity;

the sound production unit is fixed in the accommodating cavity and divides the accommodating cavity into a closed rear sound cavity and a front sound cavity communicated with the outside of the shell;

a heat exchange cavity is arranged in the wall body of the accommodating cavity, and a heat exchange medium is filled in the heat exchange cavity.

The speaker box as described above, wherein, preferably, the sound emission unit includes a support body and a sound emission unit, wherein:

the first end of the support body is accommodated in the accommodating cavity, a first groove communicated with the accommodating cavity is formed in the shell, the second end of the support body extends to the outside of the shell through the first groove, a second groove and a third groove are formed in the support body, the second groove penetrates through the first end of the support body, an opening is formed in the second end of the support body at one end of the third groove, and the other end of the third groove extends to be communicated with the second groove;

the sounding unit is supported on the second groove, the sounding unit, the accommodating cavity, the second groove and the third groove jointly form the front sounding cavity in a surrounding mode, and the sounding unit, the supporting body and the accommodating cavity jointly form the closed rear sounding cavity in a surrounding mode.

The speaker box as described above, preferably, the casing includes a top wall, a bottom wall and a peripheral wall, the top wall and the bottom wall are disposed at an interval, the peripheral wall connects the top wall and the bottom wall, the accommodating cavity is enclosed by the top wall, the bottom wall and the peripheral wall, the first groove is opened on the peripheral wall, and the support body and the heat exchange cavity are both disposed on the bottom wall.

The speaker box as described above, preferably, the casing includes a front cover and a rear cover respectively covering the two opposite sides of the sound generating unit along the vibration direction of the sound generating unit, the rear cover includes a rear cover main board disposed opposite to the front cover and a rear cover side board bent and extended from the outer periphery of the rear cover main board to the direction of the front cover and fixedly connected to the front cover, the rear cover side board abuts against the front cover to form a sealing fixation, the wall body of the rear cover main board forms the top wall, the wall body of the rear cover side board forms the peripheral wall, and the wall body of the front cover forms the bottom wall.

A loudspeaker enclosure as claimed in the preceding, wherein preferably said heat exchange chamber is provided at a rim of said bottom wall.

The loudspeaker box as described above, preferably, the edge of the bottom wall is recessed to form a fourth groove, the bottom wall is further provided with a cover plate for closing the fourth groove, and the inner wall of the cover plate and the groove wall of the fourth groove surround to form the heat exchange cavity.

In the speaker box as described above, preferably, the housing and the cover are made of metal.

A loudspeaker enclosure as described above, wherein the cover plate is preferably sealed to the bottom wall by a welded joint.

A loudspeaker enclosure as described above, wherein preferably said second slot is a stepped slot.

Preferably, the peripheral wall has a fifth groove communicating with the rear sound cavity, the housing has a sealing cover attached to the housing, and the sealing cover completely covers the fifth groove.

Compared with the prior art, the heat exchange cavity filled with the heat exchange medium is arranged in the shell, the sound production unit vibrates to generate heat when the loudspeaker box is in a working state, the heat is transferred to the heat exchange medium through the wall body of the accommodating cavity, and the heat exchange medium is contacted with external air to exchange heat to release the heat, so that the heat dissipation efficiency of the loudspeaker box is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 is a perspective view of the overall structure of an embodiment of the present invention;

FIG. 2 is an exploded view of the overall structure of the embodiment provided by the present invention;

FIG. 3 is a front view of the overall structure of the provided embodiment of the invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a perspective view of a front cover of an embodiment provided by the present invention;

fig. 6 is a perspective view illustrating a state where a front cover and a cover plate are coupled according to an embodiment of the present invention;

FIG. 7 is an angled perspective view of the rear cover of the provided embodiment of the invention;

FIG. 8 is a perspective view of another angle of the rear cover of the provided embodiment of the invention;

in the drawings, the drawings are not necessarily drawn to scale.

The reference numbers in the detailed description are as follows:

10-a loudspeaker enclosure;

100-shell, 101-containing cavity, 1011-front acoustic cavity, 1012-rear acoustic cavity, 102-heat exchange cavity, 103-first groove, 104-front cover, 1041-fourth groove, 105-rear cover, 1051-rear cover main board, 1052-rear cover side board, 106-fifth groove, 107-cover board, 108-sealing cover;

200-support, 201-second groove, 202-third groove;

300-sounding monomer.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The loudspeaker box among the prior art has the relatively poor technical defect of thermal diffusivity, through research discovery, this is because when the sound production monomer in the loudspeaker box is in operating condition, the heat of production dispels the heat to the transmission of back sound chamber and preceding sound chamber through the air, and the support that is used for supporting the sound production monomer on the one hand is plastic construction, its heat conductivity is relatively poor, the radiating efficiency is low, the hot-air seal in sound chamber behind on the other hand is in the sound intracavity, can only contact with the outside air through a hole that leaks, thereby lead to the thermal diffusivity relatively poor and then make the acoustic performance restricted.

To improve the heat dissipation function of the speaker box 10, referring to fig. 1 to 8, the applicant provides a speaker box 10 including a housing 100 and a sound generating unit, wherein:

the housing 100 has an accommodating cavity 101 inside, the sound generating unit is fixed in the accommodating cavity 101, the sound generating unit has a vibrating diaphragm for vibrating and generating sound, the sound generating unit divides the accommodating cavity 101 into a closed rear sound cavity 1012 and a front sound cavity 1011 communicating with the outside of the housing 100, and the vibrating diaphragm is accommodated in the front sound cavity 1011.

Accept to be equipped with heat transfer chamber 102 in the wall body of chamber 101, heat transfer chamber 102 is located front sound chamber 1011 and/or back sound chamber 1012, preferably, heat transfer chamber 102 is located the wall body that back sound chamber 1012 locates, the intussuseption of heat transfer chamber 102 is filled with heat transfer medium, heat transfer medium is the coolant liquid preferably, speaker box 10 is at operating condition, sound generating unit vibration produces the heat, the heat conducts for heat transfer medium via heat transfer chamber 102's wall body, heat transfer medium and outside air contact carry out the heat exchange release heat, thereby speaker box 10's radiating efficiency has been promoted.

Further, as shown in fig. 2, 4 and 7, the sound generating unit includes a supporting body 200 and a sound generating unit 300, wherein:

the first end of the support 200 is fixedly accommodated in the accommodating cavity 101, the housing 100 is provided with a first groove 103 communicated with the accommodating cavity 101, the second end of the support 200 extends to the outside of the housing 100 through the first groove 103, preferably, the support 200 is made of a plastic material and has an annular structure, the support 200 is provided with a second groove 201 and a third groove 202, the second groove 201 penetrates through the first end of the support 200, one end of the third groove 202 forms an opening on the second end of the support 200, the opening is located on the outside of the housing 100, the other end of the third groove 202 extends to be communicated with the second groove 201, and the structure forms a side sounding structure of the speaker box 10, so that the appearance of the speaker box 10 matches with the appearance of the whole machine, and flexible assembly of the speaker box 10 in the whole machine is facilitated.

The sounding monomer 300 is supported on the second groove 201, one side of the sounding monomer 300, which is provided with the vibrating diaphragm, is arranged towards the second groove 201 and is arranged at an interval with the inner wall surface of the accommodating cavity 101, the groove wall of the second groove 201 surrounds the periphery of the sounding monomer 300, the sounding monomer 300 and the second groove 201 form sealing fixation, the sounding monomer 300, the accommodating cavity 101, the second groove 201 and the third groove 202 form a front sounding cavity 1011 together, and the sounding monomer 300, the supporting body 200 and the accommodating cavity 101 form a sealed rear sounding cavity 1012 together.

Further, the casing 100 includes the roof, diapire and perisporium, roof and diapire interval set up, roof and diapire are connected to the perisporium, it is enclosed by the roof to accept chamber 101, diapire and perisporium form, first groove 103 is seted up on the perisporium, supporter 200 and heat transfer chamber 102 are all located on the diapire, sound production monomer 300 supports on supporter 200, thereby vibrate the sound production on the diapire, the heat concentrates on the diapire, also set up heat transfer chamber 102 on the diapire, heat transfer chamber 102's heat conduction effect is better, and then can improve the radiating effect.

In some embodiments, the casing 100 has a split structure to facilitate molding and assembling, and specifically, the casing 100 includes a front cover 104 and a rear cover 105 respectively covering opposite sides of the sound generating unit 300 along a vibration direction of the diaphragm of the sound generating unit 300, the front cover 104 has a plate structure, and the rear cover 105 includes a rear cover main plate 1051 opposite to the front cover 104 and a rear cover side plate 1052 bent and extended from an outer periphery of the rear cover main plate 1051 toward the front cover 104 and fixedly connected to the front cover 104. The rear lid side plate 1052 abuts against the front lid 104 to form a sealing fixation, the wall body of the rear lid main plate 1051 forms a top wall, the wall body of the rear lid side plate 1052 forms a peripheral wall, the wall body of the front lid 104 forms a bottom wall, and the support 200 is fixed to the front lid 104.

Further, heat transfer chamber 102 sets up in the border of protecgulum 104, heat transfer chamber 102 encircles the setting of sound production monomer 300, and be close to the junction of protecgulum 104 and back lid 105, make heat transfer chamber 102 can have the radiating action of protecgulum 104 and back lid 105 concurrently, the heat that the vibration of sound production monomer 300 produced transmits to heat transfer chamber 102 via protecgulum 104, the coolant liquid in the rethread heat transfer chamber 102 cools down with the heat transfer of air, the extending direction of heat transfer chamber 102 and the shape phase-match at the border of protecgulum 104, thereby make the shaping simpler and easier, there is better heat conductivity, the radiating effect is more advantageous.

Further, referring to fig. 5 and 6, the edge of the front cover 104 is recessed from the outside of the casing 100 toward the inside of the accommodating cavity 101 to form a fourth groove 1021, the extending direction of the fourth groove 1021 is matched with the shape of the edge of the front cover 104, a cover plate 1041 for closing the fourth groove 1021 is further disposed on the front cover 104, the cover plate 1041 is attached to the surface of the front cover 104 on both sides of the fourth groove 1021 to completely close the fourth groove 1021, and the inner wall of the cover plate 1041 and the groove wall of the fourth groove 1021 surround to form the heat exchange cavity 102.

In some embodiments, the preparation process of heat exchange chamber 102 is:

step 1: punching and molding the cover plate 1041 by using a steel sheet;

step 2: stamping, bending and molding the front cover 104 by using a steel sheet;

and step 3: the cover plate 1041 and the front cover 104 are welded, attached and sealed to form a heat exchange cavity 102, and two ends of the heat exchange cavity 102 are opened to form an injection port;

and 4, step 4: and cooling liquid is injected into the heat exchange cavity 102 through the injection port, and the injected cooling liquid is sealed by glue or welded.

Furthermore, the casing 100 and the cover plate 1041 are both made of metal, on the premise of ensuring the structural strength of the casing 100, the casing 100 made of metal can be designed to be thinner than the structure of the all-plastic casing 100, and because the front cover 104 and the rear cover 105 made of metal can be fixed by metal welding, no more space needs to be reserved for ultrasonic welding, while the sound-generating unit 300 is assembled effectively, the volume of the cavity in the casing 100 is greatly increased, the volume of the rear sound cavity 1012 enclosed by the sound-generating unit 300 and the casing 100 is effectively increased, and further the acoustic performance, especially the low-frequency acoustic performance, of the speaker box 10 is improved, meanwhile, the casing 100 and the cover plate 1041 made of metal have good thermal conductivity, when the diaphragm in the sound-generating unit 300 is in a working state, the conduction of the heat generated by vibration on the casing 100 and the cover plate 1041 is faster and more efficient, the overall heat dissipation performance of the speaker box 10 is improved.

Further, as shown in fig. 4, the second groove 201 is a stepped groove having a groove portion gradually bent and contracted, and the sounding unit 300 is fixed in the stepped groove, so that the sounding unit 300 can be overlapped with the thickness of the supporting body 200, thereby reducing the occupied space of the sounding unit 300 and facilitating the miniaturization of the speaker box 10.

Further, referring to fig. 2 and 8, the rear cover side plate 1052 is provided with a fifth groove 106 communicating with the rear sound cavity 1012, the housing 100 is provided with a sealing cover 108 attached to the housing 100, the sealing cover 108 completely covers the fifth groove 106, the fifth groove 106 is used for improving the air pressure balance between the rear sound cavity 1012 and the outside, and the sealing cover 108 can seal the fifth groove 106 after the rear sound cavity 1012 is filled with the sound-absorbing material through the fifth groove 106, so that the assembly of the speaker box 10 is simpler and more reliable.

The construction, features and functions of the present invention have been described in detail for the purpose of illustration and description, but the invention is not limited to the details of construction and operation, and is capable of other embodiments without departing from the spirit and scope of the invention.

Claims

1. A loudspeaker enclosure comprising:

a housing having a receiving cavity;

the method is characterized in that:

2. A loudspeaker enclosure as claimed in claim 1, wherein: the sound production unit includes supporter and sound production monomer, wherein:

the sounding monomer is supported on the second groove, the sounding monomer, the accommodating cavity, the second groove and the third groove jointly enclose the front sounding cavity, and the sounding monomer, the supporting body and the accommodating cavity jointly enclose the rear sounding cavity.

3. A loudspeaker enclosure as claimed in claim 2, wherein: the shell comprises a top wall, a bottom wall and a peripheral wall, the top wall and the bottom wall are arranged at intervals, the peripheral wall is connected with the top wall and the bottom wall, the accommodating cavity is formed by surrounding the top wall, the bottom wall and the peripheral wall, the first groove is formed in the peripheral wall, and the supporting body and the heat exchange cavity are both arranged on the bottom wall.

4. A loudspeaker enclosure as claimed in claim 3, wherein: the casing includes the edge the free vibration direction of sound production is covered respectively and is located the protecgulum and the back lid of the relative both sides of sound production monomer, the back lid include with the relative back lid mainboard that sets up of protecgulum with by the outer peripheral edges of back lid mainboard to the direction of protecgulum is buckled and is extended and with protecgulum fixed connection's back lid curb plate, back lid curb plate butt in the protecgulum forms sealed fixed, the wall body of back lid mainboard forms the roof, the wall body of back lid curb plate forms the perisporium, the wall body of protecgulum forms the diapire.

5. A loudspeaker enclosure as claimed in claim 3, wherein: the heat exchange cavity is arranged at the edge of the bottom wall.

6. A loudspeaker enclosure as claimed in claim 5, wherein: the edge of the bottom wall is sunken to form a fourth groove, a cover plate used for sealing the fourth groove is further arranged on the bottom wall, and the inner wall of the cover plate and the groove wall of the fourth groove are encircled to form the heat exchange cavity.

7. A loudspeaker enclosure as claimed in claim 6, wherein: the shell and the cover plate are made of metal materials.

8. A loudspeaker enclosure as claimed in claim 7, wherein: the cover plate is attached to and sealed with the bottom wall through welding.

9. A loudspeaker enclosure as claimed in claim 2, wherein: the second groove is a stepped groove.

10. A loudspeaker enclosure as claimed in claim 3, wherein: the peripheral wall is provided with a fifth groove communicated to the rear sound cavity, the shell is provided with a sealing cover attached to the shell, and the sealing cover completely covers the fifth groove.